static_gettext
is an internationalization framework for static, plaintext documents and templates.
It’s geared towards straightforward translation of static websites, but can be
easily used for any set of files you’d like to localize as a group.

jslint utils
is a collection of scripts that wrap JSLint for easy linting
on the command line (via Node.js or Rhino), and automated
reporting of linting errors via a continuous
integration system like Hudson.

Send to Instapaper
is a Chrome extension that replicates the
functionality of Instapaper’s bookmarklet in an elegant and embedded
way. I use it daily.

Trivial Forks

yuidoc: A quick fork of YUI Docs that runs texty bits through
Markdown before rendering the page.

jslint′: JSLint rocks, but it needs some bad parts.
I’ve forked it to add in some functionality that Douglas Crockford doesn’t
seem to be in any hurry to add, and to revert a few changes he’s made that
I think are more damaging than helpful.

Abandonware

Fallow: Ruby-based blogging engine that I wrote as a “Teach myself Ruby”
project. I’ve since thrown it away in favour of Jekyll.

Etags for Nginx: Nginx doesn’t generate Etags for static
content. With this plugin, it does. Kinda. Sorta. I wouldn’t recommend
using this in production.

DataRequestor: Pompously described (in 2005) as “Ajax without the
confusing API.” Unmaintained, untouched since SXSW 2005, released under
MIT license.

PerfectTime: JavaScript snippet that converts times on a page to a
user’s local timezone.

mcw_templates: A TextPattern plugin that enables import
and export of templates. I haven’t used TextPattern in years, so I’ve no
idea if this plugin still works.